Many-spin couplings in electron spin quantum computers

ORAL

Abstract

We study the effective Hamiltonian governing the evolution of electron spins in coupled quantum dots. Modeling the dot confining potentials with successively more realistic forms, we predict that four-body interactions can be significant in real dots in physically relevant parameter regimes. We discuss the significance of these results for quantum computing.

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Authors

  • Ryan Woodworth

  • Ari Mizel

    The Pennsylvania State University, Penn State University

  • Daniel Lidar

    University of Toronto, Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada